Ruledit: Allow add/remove building in standard build
Make add/remove building available on standard (non-experimental) ruledit builds. Opening just that one ruleset object type, as it alone will require plenty of adjusting and fixing things.
New version; leave out things that belong to #48766
Make add/remove building available on standard (non-experimental) ruledit builds. Opening just that one ruleset object type, as it alone will require plenty of adjusting and fixing things.